
Trunk types
Terminating
impedance
(Note 1)
Balance network for loop lengths (Note 2)
Zero–915 m
(zero–3000 ft)
915–1524 m
(3000–5000 ft)
> 1524 m (>
5000 ft)
2-way tie (LDR)
600 or 900 ohms
600 ohms
3COM1
3COM2
2-way tie (OAID) 600 or 900 ohms
600 ohms
3COM1
3COM2
DID (loop < 600
ohms)
600 or 900 ohms
600 ohms
3COM1
3COM2
DID (loop Š 600
ohms)
600 or 900 ohms
600 ohms
N/A
3COM2
RAN:
continuous
operation mode
600 or 900 ohms 600 or 900 ohms
N/A
N/A
Paging
600 ohms
600 ohms
N/A
N/A
Note:
The terminating impedance of each trunk unit is software selectable in LD 14 and should
match the nominal impedance of the connecting equipment.
Note:
The balance network of each trunk unit is software selectable between resistive 600 or
900 ohms or 3COM and is jumper selectable between 3COM1 and 3COM2.
Table 33: NT8D14 vintages BA/BB cable loop resistance and loss
Cable length
Cable loop resistance (ohms)
Cable loop loss (dB) (non-loaded
at 1kHz)
22 AWG
24 AWG
26 AWG
22 AWG
24 AWG
26 AWG
915 m (3000 ft)
97
155
251
0.9
1.2
1.5
1524 m (5000 ft) 162
260
417
1.6
2.0
2.5
2225 m (7300 ft) 236
378
609
2.3
3.0
3.7
3566 m (11700
ft)
379
607
977
3.7
4.8
6.0
5639 m (18500
ft)
600
960
1544
5.9
7.6
9.4
Option settings
100 Circuit Card Reference
July 2011
Summary of Contents for 1000 Series
Page 1: ...Circuit Card Reference Nortel Communication Server 1000 7 0 NN43001 311 04 04 July 2011 ...
Page 20: ...20 Circuit Card Reference July 2011 ...
Page 30: ...Introduction 30 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 116: ...Option settings 116 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 143: ...Figure 25 CP PIV card front Physical description Circuit Card Reference July 2011 143 ...
Page 148: ...NT4N39AA CP Pentium IV Card 148 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 287: ...Figure 86 Clock Controller Option 3 Operation Circuit Card Reference July 2011 287 ...
Page 302: ...NT5K21 XMFC MFE card 302 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 346: ...NT6D80 MSDL card 346 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 353: ...Figure 96 NTDK16 DLC Functional description Circuit Card Reference July 2011 353 ...
Page 461: ...Figure 147 Paging trunk operation Applications Circuit Card Reference July 2011 461 ...
Page 462: ...NT8D15 E and M Trunk card 462 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 500: ...NTAK09 1 5 Mb DTI PRI card 500 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 512: ...NTAK10 2 0 Mb DTI card 512 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 534: ...NTAK79 2 0 Mb PRI card 534 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 550: ...NTBK22 MISP card 550 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 560: ...NTBK50 2 0 Mb PRI card 560 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 595: ...Figure 165 MGC block diagram Introduction Circuit Card Reference July 2011 595 ...
Page 662: ...NTRB21 DTI PRI DCH TMDI card 662 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 668: ...NTVQ01xx Media Card 668 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 700: ......